HEIDENHAIN TNC 410 ISO Programming - Manual (Page 252)

226 8 Programming: Cycles
8.3 Cy
cles f
o
r Dr
illing
, T
a
p
p
ing
and
Th
read Millin
g U U U U Set-up clearance Q200 (incremental value): Distance
between tool tip and workpiece surface.
U U U U Depth at front Q358 (incremental value): Distance
between tool point and the top surface of the
workpiece for countersinking at the front of the tool.
U U U U Countersinking offset at front Q359 (incremental
value): Distance by which the TNC moves the tool
center away from the stud center.
U U U U Workpiece surface coordinate Q203 (absolute
value): Coordinate of the workpiece surface.
U U U U 2nd set-up clearance Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
U U U U Feed rate for counterboring Q254: Traversing
speed of the tool during counterboring in mm/min.
U U U U Feed rate for milling Q207: Traversing speed of the
tool in mm/min while milling.
Example: NC block
N25 G267 Q335=10 Q239=+1.5 Q201=-20
Q355=0 Q253=750 Q351=+1 Q200=2
Q358=+0 Q359=+0 Q203=+30 Q204=50
Q254=150 Q207=500 *